daf bit: Kiddushin 5
The first mishna of Kiddushin says: a woman is acquired in marriage in three ways: by money, by deed (a written document), or by intercourse. On money, Beit Shammai requires a dinar in value, but Beit Hillel requires a perutah (a very small amount). The g'mara then discusses betrothal through money for several pages. Shortly before today's daf we learn how this works: if a man gives a woman money (or its equivalent value in goods) and declares "behold, thou art consecrated to me" (or "betrothed to me" or "wife to me"), and she accepts the gift, they are betrothed. Apparently a gift by itself doesn't effect the betrothal without the declaration, so it's safe to give gifts to your single female friends. (2a mishna, 5b g'mara)
Today's daf is 6.
